Sitting volleyball (sometimes known as paralympic volleyball) is a form of volleyball for disabled athletes. In sitting volleyball, a 0.8 meter-wide net is set at 1.15 meters high for men and 1.05 meters high for women. The court is 10 x 6 meters with a 2-meter attack line. Players must have at least one buttock in contact with the floor whenever they make contact with the ball. It is also possible to block the serve and jousts are generally replayed.

The 2004  summer sensation movie, Napoleon Dynamite, has many tetherball scenes. As you can see below he also uses the regulated tetherball ball!

Tetherball is a traditional grade school game where two opponents stand opposite each other in hopes to securely spin a ball on a rope around a pole. Rules of the official ball size are unclear but can be purchased with a tetherball equipment set.

This fast past game takes from its original horse version.

T-ball is the introduction for children ages 4 and up to either baseball or softball. This sport uses a stand that holds the ball  instead of someone throwing the ball at them. 

This Dutch sport is similar to netball and is played with either all girl teams or co-ed teams with four men and four women. The objective of this game is to throw a ball through a bottomless basket that is mounted on a large pole. 

Being considered as the world’s fastest sport, hurling is a game that is from the ancient gaelic origin and is still played today.

Half-Rubber, a game commonly played at the beach, is a loose derivative of baseball.

Hoover-ball was invented, developed and perfected by White House physician Admiral Joel T. Boone to keep Hoover physically fit. It is a combination of tennis, volleyball and medicine ball. Teams of up to five people play on a court 66 feet by 30 feet with an 8 foot volleyball net. A 4 or 6 pound medicine ball is used and scoring is exactly like tennis.  – History of Hoover-Ball, Hoover Association

FootVolley is a sport that was created in Brazil where you volley a soccer like ball without using your hands. The field rules of the game are similar to beach volleyball.